Chip Tray Test Method for Simultaneous Multi-Chip Testing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional semiconductor chip testing processes are inefficient, requiring specific apparatus for each type of chip, leading to increased costs and manual handling, which prolongs testing time and increases the risk of shipping delays, as they cannot test multiple chips simultaneously.
Innovation Solution
A chip test method involving a chip tray with customizable test units, a cover plate, and a probe card system that allows for simultaneous testing and sorting of chips, utilizing a chip test device with a moving mechanism for efficient alignment and testing, and a sorting machine to differentiate passed and failed chips.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a specific chip test apparatus is required for each type of chip, then testing accuracy is maintained, but device complexity and cost increase
Solution Approach 1:
The chip test apparatus is designed with a universal test platform that can accommodate multiple chip types through interchangeable test fixtures and programmable test sequences. The system includes a standardized chip holder, adjustable probe card positions, and configurable test parameters that enable one apparatus to perform testing across different chip configurations, eliminating the need for dedicated apparatus for each chip type while maintaining testing accuracy.
2Measurement precision
If chips are tested one by one manually, then testing precision is maintained, but productivity decreases
Solution Approach 1:
The system combines multiple testing functions into a single integrated apparatus that can hold and test multiple chips simultaneously. The chip tray accommodates several chips in predetermined positions, with probe cards configured to contact multiple chips at the same time. The control system coordinates simultaneous testing sequences, allowing parallel execution of test operations while maintaining individual chip testing precision through isolated test circuits and independent signal paths for each chip.
Solution Approach 2:
The testing approach transitions from sequential single-chip testing to parallel multi-chip testing by utilizing spatial arrangement. Chips are positioned in a two-dimensional array on the chip tray, with probe cards extending across multiple positions to establish electrical contacts with several chips simultaneously. This dimensional expansion from one chip at a time to multiple chips in parallel dramatically increases productivity while preserving testing precision through maintained signal integrity for each chip.
3Ease of operation
If manual delivery of chips to test apparatus is used, then handling simplicity is maintained, but loss of time increases
Solution Approach 1:
Chips are pre-loaded onto the chip tray in the desired test configuration before being placed into the test apparatus. The chip tray is designed with predetermined positioning features and guides that ensure correct chip orientation and placement. This preliminary arrangement eliminates the need for manual chip handling and positioning during the testing process, as the entire tray of chips can be loaded as a single unit and automatically positioned by the apparatus, significantly reducing handling time while maintaining operational simplicity.
4Measurement precision
If conventional chip test apparatus is used, then testing accuracy is maintained, but adaptability to different chip types decreases
Solution Approach 1:
The test apparatus incorporates dynamic and adjustable components that can be reconfigured for different chip types. Probe cards with adjustable positions and angles, programmable test sequences, and modular fixture components allow the system to adapt to various chip geometries, pin configurations, and test requirements. The control system can be programmed with different test patterns and parameters specific to each chip type, enabling the same physical apparatus to maintain testing accuracy across diverse chip configurations through software-based adaptability.
Data Source
AI summary
A chip test method is disclosed and includes: loading chips on a chip tray and fastening a cover plate on the chip tray; loading the chip tray with the cover plate in a chip test device; aligning a probe card of the chip test device with a test unit of the chip tray; testing chips in the chip tray; sorting the passed chips from the failed chips.